Luxury does not always mean that it is expensive. You can see many items which at a glance look luxurious but they are not very costly. Thus if you can make a proper small luxury bathroom design, your small bathroom can be given a beautiful and luxurious look.
A Japanese designers made a bathroom design very comfortable and creative also.The company is called Spiritual Mode, which specializes in production of different bathtubs. The latest addition is Subaco ideal for compact sizes and effective use of available space you’ll have enough spaciousness for comfortable bathing and washing.
More information about these functional and compact bathroom solution for small apartment you could find on Spiritual Mode site.